CN208688240U - A kind of pulse-pressure sintering furnace - Google Patents
A kind of pulse-pressure sintering furnace Download PDFInfo
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- CN208688240U CN208688240U CN201821125921.0U CN201821125921U CN208688240U CN 208688240 U CN208688240 U CN 208688240U CN 201821125921 U CN201821125921 U CN 201821125921U CN 208688240 U CN208688240 U CN 208688240U
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Abstract
The utility model discloses a kind of pulse-pressure sintering furnaces, including sintering furnace and pulse-pressure device, pulse-pressure device includes impulse generator, pulse converter, servo valve, servo-cylinder, force snesor, transducing signal transmitter, impulse generator connects pulse converter, servo-cylinder opening connects servo valve, force snesor connects transducing signal transmitter, pulse converter, servo valve is connected by sintering controller with transducing signal transmitter, sintering furnace includes furnace body, furnace body is cylinder type, middle position is equipped with mold in furnace body, mould inside is sintering zone, the utility model has the advantage of the utility model to carry out plasma pulse electric current sintering due to treating agglomerated material using impulse current generator, and upper and lower pressure bar is set to liquidate pressurization using servo valve control servo-cylinder, make pressure at closed-loop control, in automatic adjustment The pressure of down-pressed pole, sintering temperature and sintering time needed for material to be sintered capable of being reduced.
Description
Technical field
The utility model relates to be sintered press device field more particularly to a kind of pulse-pressure sintering furnace.
Background technique
Sintering is the core link of the inorganic material preparation process such as ceramics.Material forms exclusive crystal form during the sintering process
The Physical and chemical characteristics such as structure, particle size, pattern and dislocation, defect, so that material be made to have distinctive performance.Tradition
The heating of sintering furnace is that thermal energy is transferred to heating object by convection current, conduction or radiation mode by heater to reach
A certain temperature, heat transmit from outside to inside, and sintering time is long, it is also difficult to obtain fine grain.Pulse sintering is novel burning in recent years
Knot method, being mainly characterized by of the technology are passed through DC pulse current to electrode, instantaneously generate discharge plasma, effectively benefit
The surface activation generated with pulse current and particle self-heating, realizes the supper-fast densification sintering of material, contracts significantly
Short sintering time reduces sintering temperature, but pulse current has strong directionality and polarity, leads to sintered material
It will appear that performance profile is uneven along current electric fields direction, influence the use of material.Research shows that current agglomerating plant is mentioned
The pressure of confession is constant pressure, and constant pressure acts on that lower particle is difficult to slide rearrangement, stomata is difficult to be discharged, during the sintering process
It is also easy to produce " hard aggregation " between particle, is easy to cause the non-uniform phenomenon of microstructure, therefore constrains the journey of sintered body densification
The raising of degree and mechanical property, moreover, can not be grasped in time the case where powder contraction, densifying materials in sintering process, thus
Constrain the sintering of high performance material.
Utility model content
Technical problems based on background technology, the utility model proposes a kind of pulse-pressure sintering furnaces.
A kind of pulse-pressure sintering furnace, including sintering furnace and pulse-pressure device, pulse-pressure device include pulse generation
Device, pulse converter, servo valve, servo-cylinder, force snesor, transducing signal transmitter, impulse generator connect pulses switch
Device, servo-cylinder opening connect servo valve, and force snesor connects transducing signal transmitter, pulse converter, servo valve and biography
Signal transmitting device is felt by sintering controller connection, and sintering furnace includes furnace body, and furnace body is cylinder type, and middle position is equipped in furnace body
Mold, mould inside are sintering zone, and sintering zone lower part is push-down head and push-down head fixing seat, and push-down head fixing seat lower part is connected with down
The top of pressure rod, sintering zone is equipped with seaming chuck, and seaming chuck is connected with pressure rod, and mold, which wraps around, is provided with several fevers
Body, servo-cylinder connects upper pressure rod and lower pressure rod, force snesor are set to seaming chuck and push-down head end.
Preferably, lower pressure rod and upper pressure rod are connected with servo valve, servo-cylinder, the forcing frequency phase difference of the two respectively
For 180 degree.
Preferably, seaming chuck and push-down head are equipped with displacement detector.
Preferably, the inner wall of sintering furnace is equipped with Double water-cooled structure, and Double water-cooled structure is double-deck spiral shape water pipe.
Preferably, mold outer layer is equipped with insulating layer, and insulating layer selects graphite carbon felt.
Preferably, on the side wall of sintering furnace, in sintering zone, horizontal position is equipped with observation window, and observation window is quartz glass,
Observation window is externally provided with CCD appliance coupler camera.
Preferably, sintering zone is equipped with temperature measuring equipment, and temperature measuring equipment is optical fiber type double color infrared temperature measuring instrument, directly measurement sintering
Area's internal temperature.
Preferably, sintering furnace inner side is stated equipped with overtemperature prote thermocouple.
Preferably, heater is to wait static pressure tubular graphite or molybdenum filament.
The utility model has the advantage of the utility model to carry out due to treating agglomerated material using impulse current generator
Plasma pulse electric current sintering, and so that upper and lower pressure bar is liquidated pressurization using servo valve control servo-cylinder, make pressure at closed loop control
System, automatically adjusts the pressure of upper and lower pressure bar, sintering temperature and sintering time needed for capable of reducing material to be sintered, promotes to be sintered
Particle re-arrangement, particle migration and the stomata discharge of material, accelerate the volume contraction of material to be sintered, can be fast densified
The defects of changing, eliminating stomata, micro-crack, greatly improves the sintered density and performance of product, displacement detector can limit sintering
The shift length of upper push-down head in the process guarantees that product is in equilbrium position in sintering zone, and the utility model can be widely applied
In the sintering process for preparing high performance material, crystal phase tissue more better than conventional sintering is obtained, performance is more outstanding；
Observation window is externally provided with CCD appliance coupler camera, can be in the environment of high brightness using industrial electrical equipment coupled camera
Middle capture image, shows the variations in detail in sintering process with even clearer picture；
The double-deck water holding jacket can be recycled using water cools down to furnace body, reduces furnace body because of the shape that temperature increases and generates
Become, improves product quality, prolong the service life；
Temperature measuring equipment uses optical fiber type double color infrared temperature measuring instrument, and directly measurement sintering zone internal temperature, data are directly and quasi-
Really, facilitate the control of system；
The utility model is small in size, can cooperatively form highly integrated sintering system with control system, can be reduced artificial behaviour
Make, it is safer.
Detailed description of the invention
Fig. 1 be the utility model proposes a kind of pulse-pressure sintering furnace structural schematic diagram；
Fig. 2 be the utility model proposes a kind of pulse-pressure sintering furnace pressure head structure schematic diagram up and down.
Specific embodiment
With reference to Fig. 1-2, combined with specific embodiments below the utility model is made further to explain.
A kind of pulse-pressure sintering furnace, including sintering furnace 1 and pulse-pressure device 2, pulse-pressure device 2 are sent out including pulse
Raw device 3, pulse converter 4, servo valve 5, servo-cylinder 6, force snesor 7, transducing signal transmitter 8, impulse generator 3 connect
Pulse converter 4,6 opening of servo-cylinder connect servo valve 5, and force snesor 7 connects transducing signal transmitter 8, pulses switch
Device 4, servo valve 5 and transducing signal transmitter 8 are connected by sintering controller 9, and sintering furnace 1 includes furnace body 10, and furnace body 10 is circle
Cartridge type, middle position is equipped with mold 11 in furnace body 10, is sintering zone 12 inside mold 11,12 lower part of sintering zone be push-down head 13 and
Push-down head fixing seat 14,14 lower part of push-down head fixing seat are connected with lower pressure rod 15, and the top of sintering zone 12 is equipped with seaming chuck 16, on
Pressure head 16 is connected with pressure rod 17, and mold 11, which wraps around, is provided with several heaters 18, and servo-cylinder 6 connects upper pressure rod 17
With lower pressure rod 15, force snesor 7 is set to 13 end of seaming chuck 16 and push-down head.
Lower pressure rod 15 and upper pressure rod 17 are connected with servo valve 5, servo-cylinder 6, the forcing frequency phase difference of the two respectively
For 180 degree, upper push-down head can interlock up and down impacts the raw material to be sintered of sintering zone 12, balances raw material uniform force to be sintered；
Seaming chuck 16 and push-down head 13 are equipped with displacement detector 24, can detect the upper and lower displacement of sintering zone 13, prevent
Raw material deformation to be sintered therein is too big；
The inner wall of sintering furnace 1 is equipped with Double water-cooled structure 19, and Double water-cooled structure 19 is double-deck spiral shape water pipe, benefit
Cooled down with water circulation to furnace body, reduces furnace body because of the deformation that temperature increases and generates, improve product quality, extend and use
Service life；
11 outer layer of mold is equipped with insulating layer 20, and insulating layer 20 selects graphite carbon felt, and thermal insulation property is good, when can guarantee melting
Temperature is stablized, and the pumpdown time is shortened；
On the side wall of sintering furnace 1, in sintering zone, 12 horizontal position is equipped with observation window 21, and observation window 21 is quartz glass,
Observation window 21 is externally provided with CCD appliance coupler camera 22, can be caught in the environment of high brightness using industrial electrical equipment coupled camera
Image is caught, shows the variations in detail in sintering process with even clearer picture；
Sintering zone 12 is equipped with temperature measuring equipment 23, and temperature measuring equipment is optical fiber type double color infrared temperature measuring instrument, directly measurement sintering zone
12 internal temperatures, data are directly and accurate, facilitate the control of system；
1 inner side of sintering furnace is equipped with overtemperature prote thermocouple, can sound an alarm when the temperature is excessively high；
Heater 18 is that static pressure tubular graphite or molybdenum filament is waited to have fever fastly, the uniform feature of furnace temperature；
The utility model has the advantage of the utility model to carry out due to treating agglomerated material using impulse current generator
Plasma pulse electric current sintering, and so that upper and lower pressure bar is liquidated pressurization using servo valve control servo-cylinder, make pressure at closed loop control
System, automatically adjusts the pressure of upper and lower pressure bar, sintering temperature and sintering time needed for capable of reducing material to be sintered, promotes to be sintered
Particle re-arrangement, particle migration and the stomata discharge of material, accelerate the volume contraction of material to be sintered, can be fast densified
The defects of changing, eliminating stomata, micro-crack, greatly improves the sintered density and performance of product, displacement detector can limit sintering
The shift length of upper push-down head in the process guarantees that product is in equilbrium position in sintering zone, and the utility model can be widely applied
In the sintering process for preparing high performance material, crystal phase tissue more better than conventional sintering is obtained, performance is more outstanding；
The utility model is small in size, can cooperatively form highly integrated sintering system with control system, can be reduced artificial behaviour
Make, it is safer.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art is within the technical scope disclosed by the utility model, practical according to this
Novel technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model
Within enclosing.
Claims (9)
1. a kind of pulse-pressure sintering furnace, which is characterized in that including sintering furnace (1) and pulse-pressure device (2), the pulse adds
Pressure device (2) includes impulse generator (3), pulse converter (4), servo valve (5), servo-cylinder (6), force snesor (7), passes
Feel signal transmitting device (8), the impulse generator (3) connects the pulse converter (4), servo-cylinder (6) opening
It connects servo valve (5), the force snesor (7) connects the transducing signal transmitter (8), the pulse converter (4), servo
By sintering controller (9) connection, the sintering furnace (1) includes furnace body (10), described for valve (5) and transducing signal transmitter (8)
Furnace body (10) is cylinder type, and the interior middle position of the furnace body (10) is equipped with mold (11), is sintering zone inside the mold (11)
(12), sintering zone (12) lower part is push-down head (13) and push-down head fixing seat (14), under the push-down head fixing seat (14)
Portion is connected with lower pressure rod (15), and the top of sintering zone (12) is equipped with seaming chuck (16), and seaming chuck (16) is connected with pressure rod (17),
Mold (11), which wraps around, to be provided with several heaters (18), pressure rod (17) and lower pressurization in servo-cylinder (6) connection
Bar (15), the force snesor (7) are set to the seaming chuck (16) and push-down head (13) end.
2. a kind of pulse-pressure sintering furnace according to claim 1, which is characterized in that lower pressure rod (15) He Shangjia
Compression bar (17) is connected with servo valve (5), servo-cylinder (6) respectively, and the forcing frequency phase difference of the two is 180 degree.
3. a kind of pulse-pressure sintering furnace according to claim 1, which is characterized in that the seaming chuck (16) and push-down head
(13) displacement detector (24) are equipped with.
4. a kind of pulse-pressure sintering furnace according to claim 1, which is characterized in that on the inner wall of the sintering furnace (1)
Equipped with Double water-cooled structure (19), the Double water-cooled structure (19) is double-deck spiral shape water pipe.
5. a kind of pulse-pressure sintering furnace according to claim 1, which is characterized in that mold (11) outer layer, which is equipped with, to be protected
Warm layer (20), the insulating layer (20) select graphite carbon felt.
6. a kind of pulse-pressure sintering furnace according to claim 1, which is characterized in that on the side wall of the sintering furnace (1),
In sintering zone, (12) horizontal position is equipped with observation window (21), and observation window (21) is quartz glass, the observation window (21) it is outer
Equipped with CCD appliance coupler camera (22).
7. a kind of pulse-pressure sintering furnace according to claim 1, which is characterized in that the sintering zone (12) is equipped with thermometric
Device (23), temperature measuring equipment are optical fiber type double color infrared temperature measuring instrument, directly measurement sintering zone (12) internal temperature.
8. a kind of pulse-pressure sintering furnace according to claim 1, which is characterized in that sintering furnace (1) inner side
Equipped with overtemperature prote thermocouple.
9. a kind of pulse-pressure sintering furnace according to claim 1, which is characterized in that the heater (18) is to wait static pressure
Tubular graphite or molybdenum filament.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821125921.0U CN208688240U (en) | 2018-07-17 | 2018-07-17 | A kind of pulse-pressure sintering furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821125921.0U CN208688240U (en) | 2018-07-17 | 2018-07-17 | A kind of pulse-pressure sintering furnace |
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| Publication Number | Publication Date |
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| CN208688240U true CN208688240U (en) | 2019-04-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108692564A (en) * | 2018-07-17 | 2018-10-23 | 浙江晨华科技有限公司 | A kind of pulse-pressure sintering furnace |
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2018
- 2018-07-17 CN CN201821125921.0U patent/CN208688240U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108692564A (en) * | 2018-07-17 | 2018-10-23 | 浙江晨华科技有限公司 | A kind of pulse-pressure sintering furnace |
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